English; Technical Features - Interpump Group HM Mode D'emploi

= ENGLISH =

FLOW RATE
g.p.m.
l/min.
min-max min-max
5-41 1.3-10.83
«Translated from original instructions»
THIS DOCUMENT PROVIDES THE INSTRUCTIONS FOR
THE INSTALLATION, USE AND MAINTENANCE OF THE
VALVE, THEREFORE IT IS AN INTEGRAL PART OF
THE VALVE ITSELF AND MUST BE READ CAREFULLY
BEFORE ANY USE AND KEPT WITH CARE.
STRICTLY COMPLY
CONTAINED IN THIS DOCUMENT IN VIEW OF A SAFE
AND EFFECTIVE USE OF THE VALVE.
FAILURE TO COMPLY WITH THESE INSTRUCTIONS
MIGHT CAUSE EARLY FAULTS AND RESULT IN
SITUATIONS OF DANGER, IN ADDITION TO VOIDING
ANY WARRANTY.
1- GENERAL INFORMATION
1.1- The HM automatic pressure regulator is a manually-
adjustable, pressure-operated device which, according to its
setting, limits the pump/system pressure by conveying the
excess of water to the by-pass.
Moreover, when the outlet flow is blocked, this device totally
releases the flow – and keeps under pressure the portion of
the system following the valve, while it sets the pressure to
zero in the portion of the system preceding the valve.
1.2- Since the HM valve is used in connection with a high
pressure water pump/system, which shall be called
hereafter only "system", installation and use must be suited
to the type of system used and comply with the safety
Regulations in force in the Country where the valve is used.
1.3- Before using the valve, make sure that the system the
valve is used with is certified to comply with the relevant
Directives and/or Regulations.
1.4- Before installing and using the valve for the first time,
we suggest you check that it is undamaged and make sure
that the rated features correspond to the required ones. If
this is not the case, do not use the valve and contact the
after-sales service of Interpump Group for information.
1.5- In order to install the valve correctly, follow the
instructions for the water inlet, outlet and by-pass
connections, as stated in this instruction manual and/or on
the valve itself.
2- PACKAGE
2.1- Packages must be handled in compliance with the
instructions stated on the packages themselves and/or
provided by the manufacturer.
2.2- In case the valve is not used immediately, it must be
stored in its integral package and placed in areas which are

TECHNICAL FEATURES

Max PRESSURE
MPa
(USA)
20
WITH THE INSTRUCTIONS
bar p.s.i.
200 3000
not exposed to the weather and protected from excessive
humidity and from direct sunlight. Moreover, it is advisable
to place wooden pallets or other types of pallets between
the package and the floor, in order to prevent the direct
contact with the ground.
2.3- The package components must be disposed of in
compliance with the relevant laws in force.
3- INSTRUCTIONS FOR ADJUSTMENT
3.1- In order to obtain a correct adjustment and
consequently a proper functioning of the valve, always
make sure that, when working at the maximum pressure,
the valve by-pass keeps releasing a quantity of water
equal to 5% of the total flow-rate. In case the flow-rate at
the by-pass is close to zero or exceeds 15% of the
maximum flow-rate, this could cause faults, early wear and
result in situations of danger.
The positions mentioned in the following instructions refer
to those shown in the exploded view (page 4).
3.2- Connect the valve to the water system and follow
these steps:
3.2.1- Unloose the adjustment knob pos. 30 in order to
completely release the spring.
3.2.2- Open the gun or the water control device and start
the system. Make sure that the air contained in it is fully
ejected.
3.2.3- Keeping the gun or the water control device open,
increase the pressure by screwing down the knob pos.30.
Alternate the adjusting operations with a few openings and
closings of the gun or of the control device. When the
desired pressure has been reached, open and close the
gun/control device a few times again in order to stabilize
the various components (seals, spring etc.)
3.2.4- In order to obtain working pressures different from
the set pressure, screw or unscrew the knob pos. 30.
3.2.5- The HM valve is equipped with caps pos. 1 and pos.
5. These shall be removed in case the valve is used in
systems having more than one working lines.
- -
7
Max
TEMPERATURE
°C °F
85 185
In case of doubts, do not hesitate to contact
the after-sales service of Interpump Group.
IMPORTANT: During use, never exceed the
maximum values of pressure, flow-rate and
temperature as stated in this document
and/or indicated on the valve.
MASS
kg lbs
1.1 2.42